Hi ChrisSchultz1416,
Thank you for posting your query in the Microsoft Communities. Follow these steps to make bootable USB for Windows 8.
Format a USB flash drive
In case you’re wondering how big of an USB flash drive you need, an 8GB drive is perfect since it can accommodate any of the three available ISO images. Here are the steps to format an USB flash drive.
Insert an USB flash drive into the computer.
Start a Command Prompt as an Administrator and type diskpart. This starts the Disk Partition tool which you need to use to format the flash drive. Once you see the DISKPART command prompt, type in the following commands:
a) DISKPART> list disk
b) DISKPART> select disk #
c) DISKPART> clean
d) DISKPART> create partition primary
e) DISKPART> select partition 1
f) DISKPART> active
g) DISKPART> format FS=NTFS
h) DISKPART> assign
i) DISKPART> exit
Make the USB flash drive bootable
We just need to make the USB flash drive bootable before copying the files. To do this, you can use the Boot Sector Registration Tool (bootsect.exe) which is located in the boot folder of the Windows 8 ISO image.
Start a Command Prompt as an Administrator and CHDIR into the boot folder of the Windows 8 ISO image, e.g. I:\boot where I:\ is the drive where the ISO image is mounted
Type bootsect /nt60 E: /* where E: is the drive assigned to the USB flash drive */
Eg: F:\boot>bootsect.exe /nt60 E: /*Where F: is the mounted ISO & E: is the USB flash drive*/
Copy the Windows 8 files onto the USB flash drive
From a command line, use XCOPY to copy the Windows 8 files to the USB flash drive. In the example below, I:\ is the drive where the ISO image is mounted. F:\ is the USB flash drive.
XCOPY I:\*.* F:\ /E /F /H
Thanks.